Easiest way to BIOS on Win 10

  • SpinRite v6.1 Release #3
    The 3rd release of SpinRite v6.1 is published and may be obtained by all SpinRite v6.0 owners at the SpinRite v6.1 Pre-Release page. (SpinRite will shortly be officially updated to v6.1 so this page will be renamed.) The primary new feature, and the reason for this release, was the discovery of memory problems in some systems that were affecting SpinRite's operation. So SpinRite now incorporates a built-in test of the system's memory. For the full story, please see this page in the "Pre-Release Announcements & Feedback" forum.
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    Dear Guest Visitor → Once you register and log-in please checkout the “Tips & Tricks” page for some very handy tips!

  • BootAble – FreeDOS boot testing freeware

    To obtain direct, low-level access to a system's mass storage drives, SpinRite runs under a GRC-customized version of FreeDOS which has been modified to add compatibility with all file systems. In order to run SpinRite it must first be possible to boot FreeDOS.

    GRC's “BootAble” freeware allows anyone to easily create BIOS-bootable media in order to workout and confirm the details of getting a machine to boot FreeDOS through a BIOS. Once the means of doing that has been determined, the media created by SpinRite can be booted and run in the same way.

    The participants here, who have taken the time to share their knowledge and experience, their successes and some frustrations with booting their computers into FreeDOS, have created a valuable knowledgebase which will benefit everyone who follows.

    You may click on the image to the right to obtain your own copy of BootAble. Then use the knowledge and experience documented here to boot your computer(s) into FreeDOS. And please do not hesitate to ask questions – nowhere else can better answers be found.

    (You may permanently close this reminder with the 'X' in the upper right.)


Sep 25, 2020
Most of us will need to disable Secure Boot in the BIOS. On windows the easiest and universal way to get to the BIOS is from settings;
Settings->Update & security->Recovery->Advanced startup->Restart now->Choose an option->Troubleshoot->Advanced options->UEFI Firmware settings->Restart yes it's a lot of clicks but simple enough
@garryweil : The only glitch there might be the reference to "UEFI" since DOS is "BIOS only" and all of my work (SpinRite, ReadSpeed, etc.) is currently on top of DOS. So we're not currently able to do anything on a UEFI system that doesn't at least have a BIOS emulation (CSM) mode. :-/ That IS where my post SRv6.1 work will be aimed, however.
  • Like
Reactions: Barry Wallis

The fastest way to exit Windows to the UEFI settings is using the shutdown.exe CLI app via:

shutdown /r /fw

This has to be used from an elevated CMD.EXE command prompt to work.

Kind Regards

Simon Zerafa
Cool, way faster than using settings! Thanks I'll remember this